Both are tough, tough fighters.
Both are super-humanly strong.
Both are pretty good at climbing New York City landmarks.
Rules–Spidey does not get a biplane, the Spider-mobile, or any help from other NYC heroes.
Kong gets Mary Jane is his hand, and no help from villains.
Kong wins if he wallops Spidey (dead or KO-ed), or if he can hold on to MJ atop a major NYC skyscraper for 6 hours.
Spidey wins if he Defeats Kong without MJ getting killed, or if can rescue MJ & get the Big Banana out of the Big Apple with minimum property damage.
Spider-man is Peter Parker, Mainstream Marvel Universe.
Kong is the classic, from the B&W film.
Kong starts in Washington Heights, Spidey in Central Park.
O-pine, dear friends.
Yes this was derived from the Superman/Hulk thing.